I have been trying to do 2 windows updates for weeks now and it always comes back with "Unable to do updates", "Undoing changes". Now I am getting a red warning that important security updates need carrying out but again the computer won't carry them out. My computer is about 7 or 8 yrs old and the driver updates on Acer are dated 2015 and have all been done before. Are there any new ones and can it be driver updates that are stopping these updates being carried out. I believe they may be to do with games or video updates but am not sure. Perhaps someone else is having the same problem: "2021-07 Cumulative Update for Windows 10 Version 20H2 for x64-based Systems (KB5004237)" Underneath it quotes error code 0x80070003 and says "some files are missing". The other update is : "2021-07 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 20H2 for x64 (KB5003537)". I have been trying to update these two for about 4 weeks in total. Anyone that can explain 1) What they are and 2) What I need to do to carry out these updates, bearing in mind I am not very tech savvy (LOL) ! It also says at the top in red "Your device is missing important security and quality fixes."